GB1376509A - High-pressure mercury vapour discharge lamps - Google Patents

High-pressure mercury vapour discharge lamps

Info

Publication number
GB1376509A
GB1376509A GB1397172A GB1397172A GB1376509A GB 1376509 A GB1376509 A GB 1376509A GB 1397172 A GB1397172 A GB 1397172A GB 1397172 A GB1397172 A GB 1397172A GB 1376509 A GB1376509 A GB 1376509A
Authority
GB
United Kingdom
Prior art keywords
envelope
mercury
rare earth
bromine
pressure mercury
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1397172A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of GB1376509A publication Critical patent/GB1376509A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/125—Selection of substances for gas fillings; Specified operating pressure or temperature having an halogenide as principal component
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent

Abstract

1376509 Metal vapour lamps PATENTTREUHAND-GES FUR ELEKTRISCHE GLUHLAMPEN mbH 24 March 1972 [26 March 1971] 13971/72 Addition to 1282805 Heading H1D A high pressure mercury vapour discharge lamp with an additive consisting of a halide of a rare earth metal and/or of thallium, as described in Specification 1,282,805, is characterized in that bromine is present in an amount exceeding the stoichiometric ratio by from 0À1 to 3 mg./cm.<SP>3</SP>. Preferably the excess of bromine amounts to 0À2 to 0À8 mg./cm.<SP>3</SP>, and the amount of bromides may be 0À25-10 gm./cm.<SP>3</SP>, preferably 0À5-5. The rare earth metal may comprise dysprosium, holmium and thulium, alone or in combination, and the envelope may contain 2-12 mg.Àcm.<SP>3</SP> of mercury, preferably 4-10 mg./cm.<SP>3</SP>, and may contain up to 4 mg./cm.<SP>3</SP>, preferably 3 mg./cm.<SP>3</SP>, of caesium halide such as iodide, and a noble gas. In one example the filling comprises 0À6 mg dysprosium, 0À6 mg. holmium, 5 mg. mercuric bromide, 2À4 mg. caesium iodide, 10 mg. mercury, and argon at 50 torr. The mercury bromide reacts with the rare earth metals within the discharge envelope to form their bromides with excess bromine. The lamp may comprise a single envelope without an outer envelope.
GB1397172A 1971-03-26 1972-03-24 High-pressure mercury vapour discharge lamps Expired GB1376509A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712114804 DE2114804B2 (en) 1971-03-26 1971-03-26 Mercury vapor high pressure discharge lamp with the addition of rare earth halides

Publications (1)

Publication Number Publication Date
GB1376509A true GB1376509A (en) 1974-12-04

Family

ID=5802892

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1397172A Expired GB1376509A (en) 1971-03-26 1972-03-24 High-pressure mercury vapour discharge lamps

Country Status (7)

Country Link
AT (1) AT312096B (en)
BR (1) BR7201766D0 (en)
DE (1) DE2114804B2 (en)
FR (1) FR2130255B2 (en)
GB (1) GB1376509A (en)
HU (1) HU163359B (en)
IT (1) IT969547B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686419A (en) * 1985-02-22 1987-08-11 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh Compact high-pressure discharge lamp with a fill including cadmium and lithium halide
US5264760A (en) * 1990-09-24 1993-11-23 Patent-Treuhand-Gesellschaft Fur Elektrische Gluehlampen Mbh High-pressure metal halide discharge lamp with a fill containing nickel halide

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3427280C2 (en) * 1984-07-24 1986-06-12 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Metal halide high pressure discharge lamp
NL8502509A (en) * 1985-09-13 1987-04-01 Philips Nv HIGH PRESSURE MERCURY DISCHARGE LAMP.
HU196861B (en) * 1987-01-23 1989-01-30 Tungsram Reszvenytarsasag Low colour-temperature high-pressure metal-halide lamp with good colour reproduction
GB8707670D0 (en) * 1987-03-31 1987-05-07 Emi Plc Thorn Ceramic metal halide lamps
DE4040858A1 (en) * 1990-12-20 1992-06-25 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh METAL HALOGENIDE HIGH PRESSURE DISCHARGE LAMP
US5831388A (en) * 1995-08-23 1998-11-03 Patent-Truehand-Gesellschaftfuer Elektrische Gluelampen Mbh Rare earth metal halide lamp including niobium

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1153453B (en) * 1961-06-02 1963-08-29 Patra Patent Treuhand High pressure discharge lamp with metal halide vapor and high luminous efficiency

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686419A (en) * 1985-02-22 1987-08-11 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh Compact high-pressure discharge lamp with a fill including cadmium and lithium halide
US5264760A (en) * 1990-09-24 1993-11-23 Patent-Treuhand-Gesellschaft Fur Elektrische Gluehlampen Mbh High-pressure metal halide discharge lamp with a fill containing nickel halide

Also Published As

Publication number Publication date
DE2114804C3 (en) 1979-05-17
AT312096B (en) 1973-12-10
BR7201766D0 (en) 1973-06-28
DE2114804A1 (en) 1972-10-05
HU163359B (en) 1973-07-28
IT969547B (en) 1974-04-10
DE2114804B2 (en) 1978-09-14
FR2130255B2 (en) 1977-12-23
FR2130255A2 (en) 1972-11-03

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Legal Events

Date Code Title Description
PS Patent sealed